Pressure controlled valve



April 25, 1933. E B. MOQRE PRESSURE CONTROLLED VALVE Filed Aug. 14, 1930Patented Apr. 25, 1933 VThisinverltio'n'relates'toa devinez-for con--trolling'for `I initing" the amount of uid pressurefto be adrnittedftoacontaifnerysueh Y Y positive" in operationgnnd which! .is adapted 'toremain permanently fLse'cur'e'd*oni#che stem of 'the-tire duril'ig` the`entire ftnief the tire lo 1"sj:'lnwietuaflI use.V Another object .is to-projl 'Vide 'a device of this ,cli:tractor which is; reliantively"`small in si`z"e"a;ndioonyenientlyard'5 lp'rovide an improvedfdevceoflthis character Vh1:Wing"Ineainsrperrnittingdjustnent foraccommodating 'various predetermined preslsuresf within f a substantialringe". l i. 1 A- further 'object isi 'to "provide in: connection with'20 a device of, thisaohracter, a; signal` element 'that' willprio'chlee :an audible. soun'cllln only While the .compressedairijsrowing into the tire; A still' further yobeotY .is to provide :afnovel mon'tilig1fior:ther controldevioe *i525 'upon the tire stemzwhioli will teirid to :dis:

*Figure 4 is aV perspectiye View` offthe spring andlook ymit `assombly:for thevave casing i is V affiexible i diaphragm; 22 A f :suitablematerial such? s lrubber; p circular Lin outline, whichfhasfits routerper-V riphery'.provided'.V with zu bead; 23,. radapted' Y similar'AtoilFigure 15, showing fa, :still further modioation 'of theinyention.*.gf, Figures@ and i105 are tiansver H,section-a1 views @takensubstantie-Hy fas indicated fit lines and :lO-+110, 1 respectively, onui' 8f x "5f 1w Eirgure V11; `is;=,ya;:vertioiilf u 'seotionailwiew ofYagfcap' Yused xoom-lect,ioni` withafyyalvefstenl y v equipped with aldeviceemb,Ofiying thepresl 3 .L i" i if* "if a Forthe purpose ofillustrtion'f A embodying thetpresent invention isshownyin v connection'with -the li iconventional:y nipple member, b'mmon'ly, ea'lledgythes"tern`;;l offra pneumatioxtire, althoughit;4 y 4 stooiii that. in;general the device is; eapa'fble of being `adapteoli foroontrrollingthegjamourrt of f fluid.: `pressure :to be v`auolrnittedt to: .at large-Vgrietyof'oontainers;y Referring nowdef tail to Figure'l of thedrawing, theidevioe *7,0 includesv Ia. fcasing, y 10; hay-ing' 1an;integral. y

yingfthe assembly thezexterior offsaivioap, z5-0 '14,: is f formed witha` centrally loeat'ed Y slot,

l5, forengagementby@screw iriver-or sin, 'ilar tool.'Theropjposite,endgofgtheyoasing,' .A

the jste'1n5 12, Fand'whiohl has its outer. fend v -zidwipted forapplication ofthe usual annoso y fitting `orohne/1Q:for `admitting'`comprefsed `air to 4the device which Aoontrols;,itsgtigglnni sn sion,toiftheptire. The casngis Ourmedgl gyvithl 99 :a` substantifillyannular [diaphragm ,obstin A t `further reduced ati '205 tot; *foimsaljportwmy -Inunioatingffwithwthefvalve"Chambon, 21" 'n Eisie :device 'Yu. also.

w "diaphragm'wh'ei'e :it is Ssecuredg' andA by'vir Y f tues oa-this@formation the diaphragmv has an which; assistsgin 'con:,

i ilrhiagmf; Y A

vided? jwith. arplurality 'of "external '1'g'r'oves to 'interlock 'in a`co-operativelyformed 1 groove, 24,. in the inside of said casing part,'13, andsaid diaphragm is secured at itsfout er edges by the inner endof the annular cap', 14,V through the mediumV of an linterposedgannularp'washer, 25. As, Will he observed i from Figure 1er-of Ithedravving,.,the position lof' thedia *hragmiis suchithat @substantialportion o one oi? its surfaces is exposedpto,

valve carrier, 26, is disposed' "inside -o-fthe cap, 1 4, and hasitshead engaging s uhstanI tially Vthe lentire under "surfad'o'i'f"Y thediaphragm The carrier. ,rs1-,prawn with@ 15 Sleeyvef 2.6% y' phr'gfmiin'tovvhic'h abutslfagainst" 'the' exposedl surface; oi

. v the* diaphragm. V y`lrEhe f carrier, 26, :serves :-f toreinforce-the',diaphragmfand,preventfits he-s.

' l' pressures, 'and fthe-diaphragm is preferably jV ingdamagedby'exposure to relatively high Y concavoic'onvex @in f'cross-*sectionvvithlthe1 conf-rV` adjusting the -valv'e'element ini 1 the@Llcarrier Y Mld varying "the positiony thereofwith `res 'pe'ct Y, to* its4co#operating seat. j The: a valve iical; 2,6 S ffprovidedf withaflplurality of legsgf' 26?, l".v'vliich fslidably-f'engage: the l innersursfac :of the cap,'f14;=and'also as'sistin guidspring,f 35,Ewhichiacts against'the unde r sidey offthejvalvefs'tem jcarrier,{2z6,fandf,tends to :'urg'e 'the diapliragrnl fiu-"the direction,A formaintaining"thevalve, '31, in` open` position, away from 'its seata'lInA "order-v thatthecomy pressed` air entering -thev yneck-I ofthe,tting kmay bepermitte'd vto;v act directly onifthe. dia-Vthe.hodfyofithe: element, Y 27, is. proor ducts, 27", which extend@into thelianged lthe pressurevin the chamher, 18,jvvhile ay e extendingthrough said i. diai the rchamher, -..18,'f. andithreadedY I v the upperwend-f *ofr-said-:Lysleeve-, ,26%, isf aA V- g g 'guide 'nf`1en1ber.,27,2' having ai lbodyv portion' dimensioned to provide a2 snugtelescopic Siitv in the reduced portion, 19, ,ofthe diaphragmY A chamberIandiormed Witha iiangevhasfe27?,

phragm chamber, 1 y Afest that -vvhencompressed` air is introduced Yinto the neck of the kfittingpit 4will act dicommunicating between theportion v ot the reduced chamber, 19, andthevdia- 8., It will nowbelm'anirectly upon the top ofthevalve element, 31,.,v

and, Ventering throughthe4 ducts, 273?,7Will p also act directly againstthe fcnyexvu surface Y ofthe, diaphragm and tendto ymoveit down- 'Ywardlyso as to move the valve,f31,to its seat, faga'inst thereactionf-ofthe coil spring, v35. ltQvvill, "of course, be understood that thevtension ofthespr'ing, 85, is adjusted'to alproper valuev-v'toicorrespond-lto a desired predeter minedpressurefto be admitted tof the conpr-ess'the aii` injthe sealedguchamher ,centaine aol 'tainerfor tir/ev, andwhen the predetermined Y i pressui'eisattainedin thecontainenitvwil-l fcaus'eclosureof thevalv'e`31. When thedia;j K Y .lactionftending'torestoreSaddiaphragmlto. f

fphragm ttov .normal shapejan tensibility foi? the spring, 35,1; Asindicated inthe-drawing,

Magi,-

27%, of the 1 guide elemente 27;,is ,.dimensioned' 'so ythat'. normallywhen thefispring,"35,1 fis per-J `mitted to act L Jonrthe ,diaphragmfand move the" valve away'- from itsaseat',it Will i strike `:against thelstop'w shoulder;v 18%, finf.-thecham sY-hodying 'the present inventionmay be -adapted forfuse lin connection with .valvestemsin Which theusual check valve is 'providedbr instance",assuming.Y off-,course thatadjustment f of; spring, v 35., e be such fas-to tak@Anto@OniVV Y Y Ysideration the .reduced fior: increased p, e a sure lnecessary` to'proper-operation 1n *lather-@1115, A

" of the respective cases. The passageqforthe. f,

ico

'-pressedgair into' the container visfloywvvay chambers, 21 to V18,l andthence,throughv aduct, `,36,1Which opens-'ofi' of the chamber, 18,Y and4communicates directly. vvithl thegpas-" sagevvay,l2a, ofthe valvestem.lThefopenf.

ingo-,the duct,:36, into thechamherfl, is

locatedxso vasto -befsubstantially sealed I`h 'yl-thediaphragm,22,'whenrthelatter is in valvedo,vvn'vvardlyY hy;-thefpressure i of l ,the 1coms pressed air enteringfsaid Chamber, 18.

@rasanten we@ m-illustratifmfthe neuer-1w i1-o omitted, and WillVWorkequallyivvell in either cheekzvalve thas been omitted :trom-.theLtir`est em,-12, andfis shown asfa-` partsofl my t unitary-device.' Thefoutervend of the` neck, i116, iis "internally threaded and -has seatedi '5 :therein an-element,40, havingalcentralsport,

Ma `check iva-Ive, 43, fwhich 1 is fformed lwith a plurality spacedflugs, 1144, fto`f.,prvide1.aa

fseatagainstwhich reacts -a cill spring, 45, engaging Vagainst a``s'topl,shoulder, lvin gtlieA casing," thus normally, maintaining the fval'veagainst `its f'seat, 42. @To A insure a` pen vfeet" seal4 offthevalvesjon1theirseats, Veaehnof the valve elements, Bland-43, arepreferably i "w `provided With* inserts, 3197 and 43a, offresilientmaterial "suchv as -r`1,1bleer,`iibenetc.` `eilhe valveyelement,343,;fis' provided with `anffnp-` lstanding f plunger, 46,W`which projects 'through` port,`p4l, a substantial l distance be# myondthe topY of thevelement, 40, slightly-llue- .'yond the end oftheAne'ck,"f1 6. "The-endlof *the plunger is4 adaptedA "to '--be engaged`"by a cofoperatively formed-partin a conventional lferinfot chuck lortting usefd in connection M with compressed air *hoses or ,-vconwduits`so t that when the compressed air chuck orfitl 'ting is" applied r overIthe neck, w16, of the device `the fp'lunger, y 46, `engaged fand {de-`fpresse'd*sofas"to movethe valve, 4 3,.faway 4 from' its seat' 'and'thus admit -compressedfair fthreugl11theport,41,l into thefvalvechamber, i*121. 'lTheIupper'surface ofithe element, 40,.is preferablyprovided `with `a Apluralitywoif i slots, 40a,` wh ic'h Ain addition toser-vingto ":"receivetheend of a screw driver; orlike tool "for Qthreading t it into pr'oper "position Jini the 'I 'end'of the neck,yinsure fthe entrance o-fthe "fcompressed air intojtheport-,notwithstand- "ing the factlthatifthe `co;operative element Y`Iloffmt'he compressed'air ehuek-may substantially cover the` entire'end- (ifgtheport, 4L' y c 'Arlt LvvilPbegj manifest that inthelconstruciftipniillustrated it will fbe necessary -jtogretheelenient,40, utogether with its cozoperative valve; 4.3,.A and Springs455 in Order to Lai'ord ,direct access: AtoAk `the head of i theyvzlvlfh t permit ediystngtrelativ t9. Its seatytoz accommodate' variouspredetermined pressures. "Because{of'excessive vibrations-fygfw'tli;entire contrlolfdevlcelwhenthe same 1s ythis valveelement'manyl dffits positionsof adjustment I l provideaEilatfspringllelement,

ythreaded tightly on` 4the -stein Lconipressing v.

Athe spring, 50,A to` a ((jlesireddegree;` ofi tension',

z-,bent upwardly sto engage fthe sides of l Vthe 'l nut, f54, andithusliloek ;itJ jagain'stl rotation.

' .Topreclude slippage of the ends -ioff the :abovv e' l spring ,against`the nnder. sideoffthe. carrier,`

lthe carrieris5preferably/provided with @isk substantiallygasgefoll-owsy:

fr j, 11807 =1' The operation voi? ithe` .devicelas describedanditdepresses `the rvalve, 43, L away from its through the port,-41,finto :the valvechain'()AV air then flows through the ,port, '520, andgthe' :f1ducts, `271),-ttofftheyguidelelement,p27, into i' yyth'e-,chamben1181"iTheapressure:exertedtby,.thisiicompressedffair,`reacts directlyagainst'f95 i i i I-thediaphragm, 22,A` andalsofagainst:theend Y of` the valve, l,A `and the:guilde -,elemente 27,

J1 tending'to move fthe fvalve, 31,.1toJWard-xitsV i seat.fDuringthismovementv of thepdia-` Afplira' ;1i1 the compressed airtin.the chamber,` A

18, ovvs vthrough theduct, 36,by-rea`s0n v of the diaphragnrr movingaway `strom? the` V mouth 'sery opening of lsaid .duct :so:v that ,f theycompressjedairytheni,passesiiintofasad 'fpas l i v frsagewayglQefandthenceiis admitted into the {1 05V tirireil.` If; thef Vpressure of the.compressed; air

supply is considerably greaterfthanathatzde?` l sired 4in theftire-,iitzmay set @up ya: vibratory e lmovementfofi the: i valve, :31,yalongfwith @its Ediaphragm, iandfthe Lconstant `vibration t of I ifthisunit @will .naturallyi permit intermittent nedi \ .@{a'ndi theduct, 136'; '.'llhusatvhen 4.this predeter-P mined pressure is,Aattained in {the ttire-,vthe

' ,action offthe pressure in,y .the duct,131,6,l nythe i sure yacting.,directly om thefdiaphragm rand l ongthe valve, 131,1 Will be suliicientfto overL 35'* 120 i :come the spring,"f35, and positivelyrmoveithe A llvalye :311i tolits seat and prevent ,admission v loanyimorejair-intothe tire; :n i@

'F `jiTo 1 definitely; indicate-:When: the; air tire hasv reahed apredetermined pressurevl inthe Y i shovvngisinlthennaturegofaldiskyelement,f j i 55,312 having? val ire'ctangu-largopening, 56, VVAsin Y diaphragm. In this construction the diaphragmcarrier, 26",' is yieldingly held in. contact with the under surfaceoftheV dia-i phragm by the coil spring, 35, and the guide element, 27X,removably-engages the upper surface of the diaphragmin the chamber, 18.VThis element, 27", is formed with eXterior ducts, 272, to provideconnection between the inlet and chamber, 18, and is centrally threadedfor receivingthe end, 30H01" thevalve stem, and to insure thatthe'va'lve element, 31",'will remain in the desired position. ofadjustment or to permit its being c adjusted with Vrespectto its seat,the element, 27x, is preferably provided with a pair of diametricallyopposite tongues or keys, 27, which engage in co-operatively formedgrooves orfslots,"19x,`formeduin the reduced part, 19, of the diaphragm`chamber of the j casing. Thus by rotation of `the valve in threading itinto or out of thel element, 27X, the valve will=v be positively movedtoward or from its seat. To further insure againstV accidentalVdisplacementV or misadjustments of the valve stem. due to vibration, thevalve proper, 31" is `formeel with a pair of diametrically oppositevtongues or wings, 31y, which engage in cooperativelyformed slots, 90,of a sleeve, 91, disposed inside lof j the valve chamber, 21, `whichsleeve is firmly held against thestop shoulder, 16a,'in said which` saidstem is a rigid `part arranged tol belocated within the container,saidlcasing.l

having a diaphragm chamber communicating with` the kpassageway throughthe stem, and a duct providing lcommunic'ation'between said chamber andthe cavity of the Y container; a diaphragm in the casing hav `ing oneside exposed to pressure in the chamber, the passageway through the stembeing formed to provide a vvalve seat; a

valve membercoacting-with said seatfor controlling flow through Qthestempassagej way;'a valve stem connected vto the valve Y member andlassociated' Iwith the. diaphragm for movement therewith in thepressureresponsive movement of the diaphragm, the

valve. being adjustable relatively to thedia` phra'gm-f for varying; thepredetermined pressure necessary for moving vthe valve, to closedposition, said stem being formed with valve for adjustment thereof;lmeans `normally urging the diaphragm in valve-opening direction, and acheck valve mounted in against reverse flow. ,Y

chamber by the threaded element, 41,"servil Y ingas a seat for the checkvalve. In this ,construction the spring, 45,'reacts directly between thevalve element, 43, and the valve element, 31", and it may beY herementioned that normally the pressure exertedV .byvl the spring, 35,together with the concavo-convex diaphragm acting on theelement, 27x, issuficient to hold Athe valve,31x, away from its seat, and therebytransmit the pressure through the medium vof the spring, 45, for keepingthe valve, 43, on its seat. s

The operation of the device shown in Figure `8 is substantially the sameas' thatdescribed with respect tothe device disclosed in Figure 1, withthe exception j that the valve, 31x, is' not positively connected to thediaphragm; hence when the diaphragm is moved downwardly due to thepressure of Y the compressed air, the guide element, 27x,

remains in contact Vwith the diaphragm byy virtue of the pressureexerted bythe spring,` 46. The admission of air to the stem or inlet ofthe container bygway of the duct, 36, is 4controlled in substantiallythe manner 4 above described.

512evi EMMETT 13; Moonnf f 'a detachable part at the portion of saidstem i 4 i outside the'container to permit access to saidi thedetachable portion of the stem ar-Y ranged to openffor iniow-and seating

